I just read an article about how aspirin can help with uterine lining and ovulation.
https://www.sharedjourney.com/articles/aspirin.html
Also, another article that has some interesting info about taking robitussin or mucinex to increase CM....yikes! I won't take it now that I've read this. I take FertileCM, works great!
https://www.early-pregnancy-tests.com/guaifenesin.html
I am under a doctor's care, I'm taking clomid and the kit I'm purchasing contains the catheter, syringe and cup with complete instructions. I won't be going into the cervix, really you need a speculum and light in order to do that and I wouldn't feel comfortable doing it. But, yes, if you were to do a real "ICI" it could cause infection, injury, etc. and it really doesn't increase your odds over a vaginal insemination.