Feeling strange during ovulation

I had a miscarriage on 12/6/2018. My husband and I decided to wait to try again after my levels have reached 0. My last blood test said I’m at 27. I have gotten a negative on both a digital and blue dye pregnancy tests. Only the pink dye ones show a very faint line. I’ve also had 1 cycle. Well this past Saturday, I was very emotional and my hubby was very sweet and really cheered me up (we ended up doing the deed lol). He hates to use condoms so basically, we don’t use them. I’m suppose to be ovulating this week and have gotten EWCM a few days after we had sex. I’m noticing that I am getting slight cramps in my uterus. And I feel very nauseous. I couldn’t finish my lunch because I felt like I was going to throw up. I eat very healthy so I can’t pin point it on eating too much fat or grease. My boobs feel a little sore too. I’m in no way expecting to be pregnant because i still have hcg and we had sex the day before my fertile window started. Anyone else experience this? Any thoughts on what might be going on?