Spotting before AF

Stacy

So this is our first time TTC, we are both 36. I’m on cycle day 20 and since yesterday I’ve had some faint pink spotting whenever I wipe. Yesterday morning I had some cramping that lasted a few minutes and then the spotting started. The spotting has stopped this evening. I have a heightened sense of smell, feel like I have to pee more often, a little nausea. AF isn’t due for another 5 days. I don’t spot before my period and never cramp until it’s at its heaviest. I’m thinking I might be pregnant but trying not to get my hopes up. I did take a pregnancy test today and it was negative. Too soon to test maybe? Has anyone else had symptoms like this when they were pregnant and this early? Any advice would be appreciated. It would be awesome if we conceived right away as my husband will be deploying this fall, so he’d actually get to be here for the birth.