Should i go to the doctor might have sore throat?

I was sick in January and then eventually got better. Last Wednesday I went to visit my dad and he told me my sister was sick. I made the mistake of going over near my sister but my dad kinda (made me give her her orange juice and stuff) and then Friday night i started developing a cough again. I was going to go to the doctor today but my husband determined i didnt need to go but now i am coughing up phlegm. My birthday is in two weeks and its special because its my first as a married person and my husband has the same birthday as me. I dont want to be sick on my birthday. Im kind of upset here

Should i go to the doctor just in case? Its too late today even though the urgent care is open until 11pm (i work 1pm-8:45pm decided to not call out because they will think i called out to watch the super bowl and i faked my voice when thats not true) i would go tomorrow with my husband. 

I rather get better asap