Yeah, I understand. You want to hope but at the same time you want to prepare yourself too. It seems you have a 'perfect storm' of things coming together that could mimic signs but also have other explanations.
When looking into supplements to help with my recurrent m/c I came across a supplement CoQ10. It's meant to increase egg quality and production especially for those who don't ovulate regularly and those TTC over age 35. It's a bit costly (I priced it out to be about $60 a month) but it's still cheaper than fertility treatments. You can get it at any pharmacy or health food store. I'm not taking that as I do ovulate but other idea is fish oil. It is also supposed to help with egg production and quality. It also can be taken throughout pregnancy to help prevent m/c (CoQ10 has to be stopped once you get bfp). It's a bit cheaper. I found a bottle of capsules on sale for $11 but that's the cheap stuff. I want to get the actual oil so I don't have to swallow pills through morning sickness. But a bottle of fish oil is $45 at the health store.
(though that would probably last a few months) For TTC it's important to get fish oil that is made from body oil and not the organs (ie. avoid the cod liver oil).
That's really interesting re coQ10 Starry. In my TCM book by Zita West she recommends it and mentions it as being linked to miscarriage. I'm off to buy some today, plus some selenium and magnesium (my prenatal only has v small amounts in)
xxx you sure are one fertile lady ! Lol....... Well done 
Illness does make it difficult to detect what are pregnancy symptoms or not. Sometimes sinus issues can be a 'sign' but if it's been several weeks then it would be tough to separate sick sinuses from preggo sinuses. 
