Spotting....again?

Earlier this week... Wednesday and Thursday, I had what I'm hoping was implantation bleeding. I never ever spot between periods, so this was unusual. The spotting stopped after a couple of days of one or two light spots per day. It was brownish/light red and pretty transparent...not thick like AF. Today I spotted again. It was a little darker than before, but still transparent, and looked just very light brown on the TP when I wiped after peeing. I'm not crampy, AF isn't due for a few days so I don't think it's that. Can implantation bleeding happen twice? I really want to have a baby and I thought this was going to be our month, but now I'm not sure. Any insights?