First time mom

Alright ladies so I'm trying to get pregnant with my fiancé and I need to ask a few questions! 
1. I usually check my cervix just to track and today my v was dry and swollen like.. Has anyone that has been pregnant experieced this ? 
2. I have noticed my nipples have gotten wider but haven't noticed a color change yet and they are sore. When you touch them they feel bruised. Anyone ? 
3. I had spotting 3 days before my period was due it was one drop. I put a tampon in that night  thinking my af came early but the next morning there was nothing on the tampon but light brown discharge on one tiny corner of the tampon? 
5. Also my stomach is tender to the touchstone my muscles are sore ? Or constepation but it hurts when press on it. 
6. Period is "due tomorrow according to this app" but my last period was feb 7-10 
Please help!! Thanks