Biba was a bit quite yesterday but ate OK..we took them out for a evening walk and she was running around fine...got back and she started to be sick

she was sick about 10 times within the space of an hour..first food then just bile in the end..she took herself off to bed ..i didn't feed her last night although she showed no interest anyway when i was feeding Lola...feed her this morning a small meal of chicken and rice..she hasn't been sick since but when on this mornings walk she went for about 6 wees..not like her at all normally just one and she also was squatting to try and poo but she couldn't she did this about 5 times...she has gone very quite again after coming back...if it was just her sickness last night i would have just put it down to scavenging I'm just concerned she hasn't had a poo

..i proberbly end up taking her to the vets but what are the symptoms for a blockage
