TTC after miscarriage

My had a miscarriage at 6wks on July 12th. That would of been my 2nd child. Me and my husband really want another one but tracking after the miscarriage is hard. We been BD a lot since then and now I'm starting to experience some symptoms that had me thinking. My cervix is high my cm is creamy white and the discharge keeps me to having to wear panty liners. My breast are tender and nipple are sensitive. I took 3 test in the past week and all negative. Has anybody been through this that can give some good advice.