Pregnant or mind tricks?

About 2 weeks ago I miscarried after being pregnant for 4 weeks. At the time I didn’t know I was pregnant and just had a weird feeling so I decided to take a pregnancy test. I got 2 positives and then I started bleeding. I went to the doctor and they told me I was miscarrying. After that my fiancé and I decided to actually ttc. When I was pregnant I had some strange symptoms like my knees and ankles hurting, nausea, crazy episodes of crying randomly and headaches. So my fiancé did the bd 3 days ago and now I’m having those symptoms again. I know it’s too early to test because it’s only been a few days but do you think i could be pregnant or is it just in my head because I want a baby so badly?

Baby dust to everyone !