Pregnancy symptoms 3 weeks after early miscarriage

Is 3 weeks after an early miscarriage ( all symptoms dissappeard and pg tests was neg few days after mc)

I'm not sure but think I defo ovulated a week later on 15th or 16th July as had camping and egg white cm like I normally get.

I'm starting to get pregnancy symptoms again last Wednesday I felt so tired and drained, boobs hurting a little bit,have been having an headache on and off for last few days

Today I feel really sick and got a funny taste in my mouth

Im not sure when I'm due af but one of my apps say next week. Iv done an ovulation test and it's got a second faint line last month I used them near af and had the same just before bfb.

Could I possibly be pregnant again or