TTC #1, 4 months so far, 30 yrs old,seeing RE but wondering if I really need it

Hi, I'm new here from TX. 30 yrs old. Introduced myself yesterday. DH (29) and I have been TTC 4 months (OPK and temp chart 2 months but know we BD'd during fertile time every day first 2 months.Also, preseed and soft cups last 2 months and nothing!) Off pill since 2009 but condoms every time until TTC. It's so annoying and makes you wonder why you tried so hard NOT to. LOL
After starting TTC, I noticed AF was 4 days late, then 4 days early, then 7 late, then 1 early. I called gyno to make sure not a prob and to my shock, she told me to call RE. Again, to my shock, he wanted to see me! I read all these posts from ladies who wanna see them and they won't. Blood work is fine, shows I'm ovulating, Today is CD 3 so I gotta go in for follicular ultrasound and day 3 bloodwork. DH is doing sample today, too. (I already looked at them at the lab I work in, I think he's ok but he agreed to get a formal one done since I don't have the proper counting chamber @ my current job). So anyway, I'm struggling b/c it's only been 4 months and it's all so soon and I know it's better to be safe than sorry, but I feel like do I need all this? He mentioned clomid in passing, even tho I ovulate, and I googled it and it looks like some docs do that to get a better quality egg? Well, that terrifies me b/c I'm small and have ankylosing spondylitis (autoimmune spinal arthritis-rheumy said I can have kids with no effect besides pain) and I am worried about carrying one with my back, let alone multiples! I know I am getting ahead of myself but it's so much! UGGGH! Anyway, just wanted to rant. I guess I will keep seeing him since my ins covers it but I hope I don't end up doing something I didn't need to if it would happen anyway. Thanks for listening! I know it's long! S