After agonizing about whether to get the vaccine b

After agonizing about whether to get the vaccine because of worry about the long term effects, I decided to do so Monday morning. Tuesday morning I had a sore shoulder and by noon I developed a slight intermittent cough. Tusday evening i developed a stuffy/runny nose, but no fever. Achy sinus, cough, runny nose still here today (Wednesday). Here's my guesse about what's going on with me:
1. A reaction to the vaccine?
2. Coming down with a cold (haven't had a cold for over 2 years)
3.. First stages of covid19?
Comments ate welcome.