Im just fed up

Im struggling so bad right now mentally tired and just wanna shut complete down , had a miscarriage in December due to partial molar pregnancy Took forever for levels to go down , fast forward 3 cycles later i got a bfp at 8dpo im guessing ( I had to ovulate earlier which is crazy due to the fact I had a peak and everything a day after I ovulated ) so now I don’t trust opks however I got a bfp with digital clear blue wondfo first response and the clear blue pink dye so I know for a fact it wasn’t a false positive the next morning it was still positive then hours later negative then again back positive now two days later all test are negative and my blood test came back at a 1 today im literally so lost and confused as I can’t trust my body anymore or opks because how did I have a peak the day after I ovulated unless I got a bfp at 7dpo which I never even heard of before im just all the way around confused and I know it’s not left over hcg from my loss because my levels were at at four jan 29 i just really give up